U.S. patent number 10,175,545 [Application Number 15/558,148] was granted by the patent office on 2019-01-08 for backlight module and liquid crystal display device.
This patent grant is currently assigned to Wuhan China Star Optoelectronics Technology Co., Ltd. The grantee listed for this patent is Wuhan China Star Optoelectronics Technology Co., Ltd.. Invention is credited to Changwen Ma, Yu-Cheng Tsai, Pan Xu, Zhou Zhang, Yaling Zhou.
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United States Patent |
10,175,545 |
Zhou , et al. |
January 8, 2019 |
Backlight module and liquid crystal display device
Abstract
The present application discloses a backlight module and a
liquid crystal display device, the backlight module includes a
first connecting terminal disposed on the backlight module for
connecting the liquid crystal panel; a second connecting terminal
disposed on the backlight module for connecting the control circuit
board; a processing circuit is formed on one side of the backlight
module to connect to the first connecting terminal and the second
connecting terminal, respectively, and for realizing the signal
processing and the connection between the liquid crystal panel and
the control circuit board. The application can eliminate the
conventional FPCA and reducing the thickness and weight of the
liquid crystal display device.
Inventors: |
Zhou; Yaling (Guangdong,
CN), Zhang; Zhou (Guangdong, CN), Tsai;
Yu-Cheng (Guangdong, CN), Ma; Changwen
(Guangdong, CN), Xu; Pan (Guangdong, CN) |
Applicant: |
Name |
City |
State |
Country |
Type |
Wuhan China Star Optoelectronics Technology Co., Ltd. |
Wuhan, Hubei |
N/A |
CN |
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Assignee: |
Wuhan China Star Optoelectronics
Technology Co., Ltd (Wuhan, Hubei, CN)
|
Family
ID: |
63853859 |
Appl.
No.: |
15/558,148 |
Filed: |
June 13, 2017 |
PCT
Filed: |
June 13, 2017 |
PCT No.: |
PCT/CN2017/088025 |
371(c)(1),(2),(4) Date: |
September 13, 2017 |
Prior Publication Data
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Document
Identifier |
Publication Date |
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US 20180307081 A1 |
Oct 25, 2018 |
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Foreign Application Priority Data
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Apr 25, 2017 [CN] |
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2017 1 0277673 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
G02F
1/1336 (20130101); G02F 1/13458 (20130101); G02F
1/13306 (20130101); G02F 1/13452 (20130101); G02F
2001/133612 (20130101) |
Current International
Class: |
G02F
1/1345 (20060101); G02F 1/13357 (20060101); G02F
1/133 (20060101) |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
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201773244 |
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Mar 2011 |
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CN |
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1020100001546 |
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Jan 2010 |
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KR |
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Primary Examiner: Nguyen; Sang V
Attorney, Agent or Firm: Cheng; Andrew C.
Claims
What is claimed is:
1. A backlight module, comprising: a first connecting terminal
disposed on the backlight module for connecting a liquid crystal
panel parallel to the backlight module; a second connecting
terminal disposed on the backlight module for connecting a control
circuit board parallel to and facing the backlight module, the
second connecting terminal is a pad built on a side surface of the
backlight module for directly engaging the control circuit board
and the backlight module to each other by a corresponding
connecting terminal formed on the opposing surface of the control
circuit board; wherein the backlight module is sandwiched between
the liquid crystal panel and the control circuit board; a
processing circuit formed on one side of the backlight module by a
3D printing technique, to connect to the first connecting terminal
and the second connecting terminal, respectively, and for realizing
the signal processing and the connection between the liquid crystal
panel and the control circuit board; and the second connecting
terminal is a pad built in the side surface or provided on the side
surface of the backlight module; wherein the first connecting
terminal, the second connecting terminal and the processing circuit
are integrated into the backlight module, the liquid crystal panel
and the control circuit board are independent from the backlight
module.
2. The backlight module according to claim 1, wherein the first
connecting terminal is a flexible circuit board, FPC drawn from the
side surface of the backlight module.
3. The backlight module according to claim 1, wherein the
processing circuit is formed on the outer side surface of the
backlight module opposite to the liquid crystal panel.
4. The backlight module according to claim 1, further comprising a
back plate, wherein the processing circuit is formed on the outer
side surface of the back plate.
5. A backlight module, comprising: a first connecting terminal
disposed on the backlight module for connecting a liquid crystal
panel parallel to the backlight module; a second connecting
terminal disposed on the backlight module for connecting a control
circuit board parallel to and facing the backlight module, the
second connecting terminal is a pad built on a side surface of the
backlight module for directly engaging the control circuit board
and the backlight module to each other by a corresponding
connecting terminal formed on the opposing surface of the control
circuit board; wherein the backlight module is sandwiched between
the liquid crystal panel and the control circuit board; and a
processing circuit formed on one side of the backlight module to
connect to the first connecting terminal and the second connecting
terminal, respectively, and for realizing the signal processing and
the connection between the liquid crystal panel and the control
circuit board; wherein the first connecting terminal, the second
connecting terminal and the processing circuit are integrated into
the backlight module, the liquid crystal panel and the control
circuit board are independent from the backlight module.
6. The backlight module according to claim 5, wherein the
processing circuit is formed on one side of the backlight module by
a 3D printing technique.
7. The backlight module according to claim 5, wherein the first
connecting terminal is a flexible circuit board, FPC drawn from the
side surface of the backlight module.
8. The backlight module according to claim 5, wherein the
processing circuit is formed on the outer side surface of the
backlight module opposite to the liquid crystal panel.
9. The backlight module according to claim 5, further comprising a
back plate, wherein the processing circuit is formed on the outer
side surface of the back plate.
10. A liquid crystal display device, comprising: a liquid crystal
panel; a control circuit board; a backlight module comprising a
first connecting terminal disposed on the backlight module, for
connecting the liquid crystal panel parallel to the backlight
module; a second connecting terminal disposed on the backlight
module, for connecting the control circuit board parallel to and
facing the backlight module, the second connecting terminal is a
pad built on a side surface of the backlight module for directly
engaging the control circuit board and the backlight module to each
other by a corresponding connecting terminal formed on the opposing
surface of the control circuit board, wherein the backlight module
is sandwiched between the liquid crystal panel and the control
circuit board; a processing circuit formed on one side of the
backlight module, and connecting to the first connecting terminal
and the second connecting terminal respectively, for realizing the
signal processing and the connection between the liquid crystal
panel and the control circuit board; wherein the first connecting
terminal, the second connecting terminal and the processing circuit
are integrated into the backlight module, the liquid crystal panel
and the control circuit board are independent from the backlight
module.
11. The liquid crystal display device according to claim 10,
wherein the processing circuit is formed on one side of the
backlight module by a 3D printing technique.
12. The liquid crystal display device according to claim 10,
wherein the liquid crystal display comprising a third connecting
terminal corresponding to the first connecting terminal and the
liquid crystal panel and the backlight module are connected via the
first connecting terminal and the third connecting terminal.
13. The liquid crystal display device according to claim 10,
wherein the liquid crystal display comprising a fourth connecting
terminal corresponding to the second connecting terminal and the
control circuit board and the backlight module are connected via
the second connecting terminal and the fourth connecting
terminal.
14. The liquid crystal display device according to claim 10,
wherein the first connecting terminal is a flexible circuit board,
FPC drawn from the side surface of the backlight module.
15. The liquid crystal display device according to claim 10,
wherein the processing circuit is formed on the outer side surface
of the backlight module opposite to the liquid crystal panel.
16. The liquid crystal display device according to claim 10, the
backlight module further comprising a back plate, wherein the
processing circuit is formed on the outer side surface of the back
plate.
Description
FIELD OF THE INVENTION
The present application relates to a liquid crystal display
technology field, and more particularly to a backlight module and
liquid crystal display device.
BACKGROUND OF THE INVENTION
With the rapid development of various electronic products, thinner
and lightweight become an important criterion for judging
electronic products. The production of existing electronic
products, the thickness and weight of the entire electronic
products is reduced mainly by reducing the thickness and weight of
the liquid crystal display panel or backlight module.
Referring to FIGS. 1 and 2, during a long period of development and
research of the inventors of the present application, it have been
found that the connection of the control circuit board 300 and the
liquid crystal panel 200 is needed to through electronic
components. At present, by integrating the electronic components on
the FPC to form a FPCA400 (flexible printed circuit board
assembly), and by using FPCA400 to realize the connection between
the control circuit board 300 and the liquid crystal panel 200, so
that the FPCA400 has a certain thickness and area to carry the
electronic components. A backlight module 100 is provided between
the control circuit board 300 and the liquid crystal panel 200, and
the FPCA400 is required to cross the backlight module 100, so that
the FPCA400 has a certain length. The FPCA400 occupies too much
volume and weight, is not conducive to the realization of the
thinning and lighting of the electronic products.
SUMMARY OF THE INVENTION
A technical problem to be solved by the present application is to
provide a backlight module and a liquid crystal display device,
thereby eliminating the conventional FPCA and reducing the
thickness and weight of the liquid crystal display device.
In order to solve the above technical problems, a technical aspect
of the present application is to provide a backlight module
including:
a first connecting terminal disposed on the backlight module for
connecting the liquid crystal panel;
a second connecting terminal disposed on the backlight module for
connecting the control circuit board;
a processing circuit formed on one side of the backlight module to
connect to the first connecting terminal and the second connecting
terminal, respectively, and for realizing the signal processing and
the connection between the liquid crystal panel and the control
circuit board.
In order to solve the above technical problems, another technical
aspect of the present application is to provide a liquid crystal
display device including:
a liquid crystal panel;
a control circuit board;
a backlight module including a first connecting terminal disposed
on the backlight module, for connecting the liquid crystal panel; a
second connecting terminal disposed on the backlight module, for
connecting the control circuit board; a processing circuit formed
on one side of the backlight module, and connecting to the first
connecting terminal and the second connecting terminal
respectively, for realizing the signal processing and the
connection between the liquid crystal panel and the control circuit
board.
The processing circuit for connecting the liquid crystal panel and
the control circuit board formed on FPCA previously, is disposed on
the backlight module in the embodiment of the present application,
to improve the production efficiency of the processing circuit and
reduce the cost, while eliminating the conventional FPCA and
reducing the thickness and weight of the liquid crystal display
device.
BRIEF DESCRIPTION OF THE DRAWINGS
In order to more clearly illustrate the embodiments of the present
application or prior art, the following FIG.s will be described in
the embodiments are briefly introduced. It is obvious that the
drawings are merely some embodiments of the present application,
those of ordinary skill in this field can obtain other FIG.s
according to these FIG.s without paying the premise.
FIG. 1 is an exploded stereoscopic perspective view of a liquid
crystal display device in the conventional technology;
FIG. 2 is a schematic plan view of the liquid crystal display
device in the conventional technology;
FIG. 3 is a schematic structural view of an embodiment of the
backlight module of the present application;
FIG. 4 is an exploded stereoscopic perspective view of an
embodiment of the liquid crystal display device of the present
application;
FIG. 5 is an exploded stereoscopic side view of an embodiment of
the liquid crystal display device of the present application;
FIG. 6 is a schematic plan view of a liquid crystal display device
according to an embodiment of the present application; and
FIG. 7 is a schematic plan view of a liquid crystal display device
according to an embodiment of the present application.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
Embodiments of the present application are described in detail with
the technical matters, structural features, achieved objects, and
effects with reference to the accompanying drawings as follows. It
is clear that the described embodiments are part of embodiments of
the present application, but not all embodiments. Based on the
embodiments of the present application, all other embodiments to
those of ordinary skill in the premise of no creative efforts
acquired should be considered within the scope of protection of the
present application.
Specifically, the terminologies in the embodiments of the present
application are merely for describing the purpose of the certain
embodiment, but not to limit the invention. Embodiments and the
claims be implemented in the present application requires the use
of the singular form of the book "an", "the" and "the" are intend
to include most forms unless the context clearly dictates
otherwise. It should also be understood that the terminology used
herein that "and/or" means and includes any or all possible
combinations of one or more of the associated listed items.
Referring to FIG. 3, the backlight module embodiment of the present
application includes:
A first connecting terminal 101, disposed on the backlight module
10 for connecting the liquid crystal panel;
A second connecting terminal 102, disposed on the backlight module
10 for connecting the control circuit board,
A processing circuit 103 formed on one side of the backlight module
10 to connect to the first connecting terminal 101 and the second
connecting terminal 102, respectively, for realizing the signal
processing and the connection between the liquid crystal panel and
the control circuit board.
The processing circuit 103 can include a photoelectric conversion
circuit or a voltage, a current control circuit, and the like. The
liquid crystal panel can include a driving IC (integrated circuit),
a polarizer, a filter, a touch panel, and the like. The control
circuit board can include a control circuit, a processing circuit
and a power source.
Alternatively, the control circuit board transmits the control
signal to the processing circuit 103 through the second connecting
terminal 102, after the processing of the processing circuit 103,
and transmits the control signal to the liquid crystal panel
through the first connecting terminal 101 to control the backlight
module 10 to generate the outputting of the light. The processing
circuit 103 can also realize the transmitting of other signals such
as an induction signal.
Alternatively, the processing circuit 103 is formed on one side of
the backlight module 10 by a 3D printing technique. The processing
circuit 103 formed by 3D printing has the advantages of high
accuracy and low cost, and the printing cycle of the processing
circuit 103 is short and the production efficiency is high. Of
course, the processing circuit 103 can be formed on the backlight
module 10 in other ways, for example, by transferring the
corresponding circuits on the side of the backlight module and
welding the corresponding elements on the transferred circuits to
form the processing circuit 103.
Alternatively, the second connecting terminal 102 is a pad built in
the side surface or provided on the side surface of the backlight
module 10. For example, the second connecting terminal 102 is an
engagement mechanism, specifically, a groove or a protrusion, which
is built in the side surface of the backlight module 10 for
matching with the connection structure of the control circuit
board. The second connecting terminal 102 is a shrapnel pad or a
conductive pad which is provided on the side surface.
Alternatively, the first connecting terminal 101 is a flexible
circuit board, FPC drawn from the side surface of the backlight
module 10.
The processing circuit for connecting the liquid crystal panel and
the control circuit board formed on FPCA previously, is disposed on
the backlight module in the embodiment of the present application,
to improve the production efficiency of the processing circuit and
reduce the cost, while eliminating the conventional FPCA and
reducing the thickness and weight of the liquid crystal display
device.
Referring to FIGS. 4 to 7, the embodiment of the liquid crystal
display device of the present application includes:
A liquid crystal panel 20;
A control circuit board 30;
The backlight module 10 includes a first connecting terminal 101
provided on the backlight module 10 for connecting the liquid
crystal panel 20, and a second connecting terminal 102 provided on
the backlight module 10 for connecting the control circuit board
30, the processing circuit 103 is formed on one side of the
backlight module 10, and connecting to the first connecting
terminal 101 and the second connecting terminal 102 respectively
for realizing the signal processing and the connection between the
liquid crystal panel 20 and the control circuit board 30.
Alternatively, the backlight module 10 further includes a back
plate 104 and a plastic frame 105, the processing circuit 103 is
formed on the outer side surface of the backlight module 10
opposite to the liquid crystal panel, i.e., the outer side surface
of the back plate of the backlight module 10. The first connecting
terminal 101 is a flexible circuit board, FPC drawn out from the
side surface of the backlight module 10; the liquid crystal panel
20 includes a third connecting terminal 201 corresponding to the
first connecting terminal 101; the third connecting terminal 201 is
an FPC interface, and the FPC is bent and pressed together in the
interface of the FPC to realize the connection of the liquid
crystal panel 20 and the backlight module 10, wherein the FPC is
located on the inside of the plastic frame 105, and the FPC is
fixed and protected by the plastic frame 105.
Alternatively, the second connecting terminal 102 is a pad built in
the side surface or is provided on the side surface of the
backlight module 10; the control circuit board 30 includes a fourth
connecting terminal 301 corresponding to the second connecting
terminal 102. When the second connecting terminal 102 is a groove
built in the side surface of the backlight module 10, the fourth
connecting terminal 301 is a projection corresponding to the
groove, and the second connecting terminal 102 and the fourth
connecting terminal 301 are engaged with each other to realize the
connection of the control circuit board 30 and the backlight module
10, wherein the second connecting terminal 102 can be a projection
built in the side surface of the backlight module 10, and the
fourth connecting terminal 301 is a groove corresponding to the
projection. If the second connecting terminal 102 is a shrapnel pad
provided on the side surface, the fourth connecting terminal 301 is
a conductive pad corresponding to the shrapnel pad, and the second
connecting terminal 102 is in contact with the fourth connecting
terminal 301 to realize the connection of the control circuit board
30 and the backlight module 10; wherein the second connecting
terminal 102 can also be a conductive pad and the fourth connecting
terminal 301 is a shrapnel pad corresponding to the conductive
pad.
Alternatively, the second connecting terminal 102 and the fourth
connecting terminal 301 can also be other interconnected connection
structures corresponding to each other.
Alternatively, the backlight module 10 emits light and to the
liquid crystal panel 20; the control circuit board 30 outputs a
control signal through the fourth connecting terminal 301, and the
processing circuit 103 receives the control signal through the
second connecting terminal 102 connected to the fourth connecting
terminal 301, and after the processing of the control signal, then
outputting the signal via the first connecting terminal 101, the
liquid crystal panel 20 receives the control signal through the
third connecting terminal 201 connected to the first connecting
terminal 101, and controls the output of the light via the driving
IC.
Alternatively, the liquid crystal panel 20 outputs the touching
signal through the third connecting terminal 201, the processing
circuit 103 receives the touching signal through the first
connecting terminal 101 connected to the third connecting terminal
201, and converts the touching signal into an electrical signal,
and the signal is outputted through the second connecting terminal
102, the control circuit board 30 receives the electric signal
through the fourth connecting terminal 301 connected to the second
connection section 102, then processes and feedbacks the electrical
signal. Alternatively, the processing circuit 103 can also perform
transmission of other signals such as a detection signal.
In another embodiment, the description of the backlight module 10
of the liquid crystal display device is described in detail with
reference to the embodiments of the backlight module described
above.
The processing circuit for connecting the liquid crystal panel and
the control circuit board formed on FPCA previously, is disposed on
the backlight module in the embodiment of the present application,
to improve the production efficiency of the processing circuit and
reduce the cost, while eliminating the conventional FPCA and
reducing the thickness and weight of the liquid crystal display
device.
Above are embodiments of the present application, which does not
limit the scope of the present application. Any modifications,
equivalent replacements or improvements within the spirit and
principles of the embodiment described above should be covered by
the protected scope of the invention.
* * * * *